其中，时钟显示包含单时区时钟显示和多时区时钟显示，计时器可实现倒计时与正常计时。
The function of clock display contains the displays of single time zone clocks and multi time zone clocks. The timer can realize functions of countdown and clock.
其中，时钟显示包含单时区时钟显示和多时区时钟显示，计时器可实现倒计时与正常计时。
The function of clock display contains the displays of single time zone clocks and multi time zone clocks. The timer can realize functions of countdown and clock.
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